[gst-devel] Jitter and pause in video playing using gstreamer ...

[Eric Zhang]

Hi, gstreamer-devel:

    1. Add a probe in front of your sink element and print every buffer's
timestamp. If the timestamp is discontinuous, consider all the elements in
your pipeline which modified the timestamp.

    2. If the timestamp of buffer is OK, watch the CPU load. It is possible
that your processor cannot decode quickly.

Eric Zhang
2008/12/16 Wierd O <wierdo_b at hotmail.com>

>
> Hi all ,
>
> I am using gstreamer to stream video from a file source in iMX27 freescale
> app processor. I have used the gst-launch command and i get the video
> output. But the video has jitter and sometimes pause for some time. I dont
> understand the problem since there is no error message. Here is the code for
> the output...
>
>
> ###################################################################################################
>
> mx27# Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> /pipeline0/mfwgstvpu_dec0.sink: caps = video/mpeg, mpegversion=(int)4,
> systemstream=(int)0, height=(int)240, width=(int)320,
> framerate=(fraction)24999/1000
> /pipeline0/mfwgstvpu_dec0.sink: caps = video/mpeg, mpegversion=(int)4,
> systemstream=(int)0, height=(int)240, width=(int)320,
> framerate=(fraction)24999/1000
> WARNING: from element /pipeline0/demux: pads are not negotiated!
> Additional debug info:
> audio pads are not negotiated!
> /pipeline0/mfwgstvpu_dec0.src: caps = video/x-raw-yuv, format=(fourcc)I420,
> width=(int)320, height=(int)240, pixel-aspect-ratio=(fraction)1/1,
> num-buffers-required=(int)3
> /pipeline0/mfw_gst_v4lsink_info_t0.sink: caps = video/x-raw-yuv,
> format=(fourcc)I420, width=(int)320, height=(int)240,
> pixel-aspect-ratio=(fraction)1/1, num-buffers-required=(int)3
> Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
>
>
> ###################################################################################################
>
> Can somebody give me an idea where might be the problem ?
>
> W.
>
> ------------------------------
> Express yourself instantly with MSN Messenger! MSN Messenger<http://clk.atdmt.com/AVE/go/onm00200471ave/direct/01/>
>
>
> ------------------------------------------------------------------------------
> SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada.
> The future of the web can't happen without you.  Join us at MIX09 to help
> pave the way to the Next Web now. Learn more and register at
>
> http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20081218/41df0fed/attachment.htm>